BUARREMON.—ARREMON, | 323 
lete flavis ; rostro nigro; pedibus corylinis. Long. tota 7:4, ale 3:4, caude 3°6, rostri a rictu 0-7, tarsi 
1-0. (Descr. maris ex Parita, Costa Rica. Mus. nostr.) 
mari similis, dorso medio paulo fuscescentiore. 
Hab. Costa Rica, San José ?, Dota 2, Parita (Carmiol), Rancho Redondo (v. Frantzius 8, 
Carmiol *), La Palma *, Quebrada Honda (v. Frantzius?3), Volean de Irazu (Arcé, 
Rogers, J. Cooper *), Navarro (Boucard®); Panama, Volcan de Chiriqui (Arcé). 
Mr. Lawrence when describing this species placed it in the genus Tachyphonus; but 
the almost exact similarity in the colouring of the plumage of the sexes, the general 
structure, and the absence of any glossiness in the pterylosis, indicate that its proper 
place is in Buarremon. 
Its sombre plumage, relieved by the bright yellow tibiz, render B. tibialis a remark- 
able bird, and it has no near allies. 
It is not an uncommon species in Costa Rica, where it frequents the mountain forests. 
We have also received specimens from the Volcan de Chiriqui, which perhaps marks 
the limit of its range in a south-easterly direction. 
We have figured a male from Parita, Costa Rica. 
8. Buarremon crassirostris. 
Buarremon crassirostris, Cassin, Pr. Ac. Phil. 1865, p. 170'; Salv. P. Z. S. 1867, p. 140, t. 14°; 
1870, p. 188°; Lawr. Ann. Lyc. N.Y. xi. p. 101%. 
Buarremon mesoxanthus, Salv. P. Z. 8. 1866, p. 72’. 
Supra olivaceus, capite summo castaneo ; loris, regione oculari et tectricibus auricularibus cinereo-nigris ; subtus 
plumis gule medialiter albis extus et intus nigris, pectus versus cinereis ; pectore, hypochondriis et crisso 
olivaceis, abdomine medio lete flavo ; alis et cauda fusco-nigris illis extus dorso concoloribus ; rostri maxilla 
cornea, mandibula albicante, pedibus corylinis. Long. tota 6:0, ale 3:0, caude 2°6, rostri a rictu 0°75, 
tarsi 1:15. (Descr. maris ex Veraguas, Panama. Mus. nostr.) 
2 mari similis. 
Hab. Costa Rica, Barranca (Carmiol!+); Panama, Cordillera de Tolé 2, Cordillera del 
Chucu ? 3, Santiago de Veraguas?? (Arcé). 
Sb. crassirostris has its nearest ally in B. castaneiceps of Northern Colombia and 
Ecuador, one of the most obvious differences being its yellow abdomen. Both are 
rather aberrant members of Buarremon, having a very robust bill and shorter tail. The 
eggs, too, differ—those of B. castaneiceps, according to Salmon, being white, thickly 
spotted at the larger end with red, the eggs of B. drunneinucha being spotless pale 
greenish blue. 
The name B. mesoranthus given to Panama specimens by Salvin > is synonymous with 
that of Cassin, and, though of later date, was published prior to the arrival of the 
description of the latter in this country. 
ARREMON. 
Arremon, Vieillot, Anal. p. 32 (1816) (type Tanagra silens, Bodd.) ; Scl. P. Z. 8. 1856, p. 80. 
There are about twelve known species of this purely Neotropical genus, of which 
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